Invention Grant
- Patent Title: Wireless communication unit, linearised transmitter circuit and method of linearising therein
- Patent Title (中): 无线通信单元，线性化发射机电路及其线性化方法
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Application No.: US11623848Application Date: 2007-01-17
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Publication No.: US08175553B2Publication Date: 2012-05-08
- Inventor: Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
- Applicant: Moshe Ben-Ayun , Paul H. Gailus , Ovadia Grossman , Mark Rozental
- Applicant Address: US IL Schaumburg
- Assignee: Motorola Solutions, Inc.
- Current Assignee: Motorola Solutions, Inc.
- Current Assignee Address: US IL Schaumburg
- Agent Valerie M. Davis; Terri Hughes Smith; Kenneth A. Haas
- Main IPC: H01Q11/12
- IPC: H01Q11/12
Abstract:
A wireless communication unit includes a linearised transmitter having a forward path and a feedback path, respectively comprising at least one up-mixer and down-mixer, and forming two loops in quadrature. A phase training signal is applied to the at least one down-mixer in the feedback path in an open loop mode of operation to identify a loop phase adjustment to be applied. At least one of the two loops is switched to a closed loop mode of operation and the loop phase adjustment is applied to at least one up-mixer located in the forward path.
Public/Granted literature
- US20080171522A1 WIRELESS COMMUNICATION UNIT, LINEARISED TRANSMITTER CIRCUIT AND METHOD OF LINEARISING THEREIN Public/Granted day:2008-07-17
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